Adding-machine



J. L. MoGALEB.

' ADDING MACHINE. No. 326,767. Patented Sept. 22, 1885. 171L941.

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W a, F 1].? F I "al J2 WITNESSES H MENTOR W% Wi W ATTORNEYS.

UNITED STATES PATENT OFFICE.

JOHN L. MUOALEB, OF BENTON, TEXAS.

ADDING-MACHINE.

SPEGIFICATION forming part of Letters Patent No. 326,767, dated September 22,1885.

Application [ilcd April 1'7, 1895.

To all whom it may concern:

Be it known that I, J onx L. MoOxLEn, of Benton, Atascosa county, Texas, have inventedanew and Improved Adding lliachine, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved machine of simple construction and operation for adding numbers.

The invention consists in the combination, with a box, of a spindle in the same, a sleeve surrounding the spindle, a hand on the spindle, a hand on the sleeve, devices for turning the spindle from the sleeve, a cog-wheel revolved from the spindle, and an extra hand in connection with the cog-wheel.

lower hand, G, is at 98.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both figures.

Figure l is a plan view of my improved adding'machine, and Fig. Zisacross-seetional elevation of the same.

On the top of a flat box, A, a circle, 13, is arranged or produced, and is divided into one hundred parts, marked from 0 to 99. Within the circle B a smaller circle, 0, is arranged, divided. into twenty parts, marked from 0 to 19. A spindle, D, is journaled in the box at the middle of the circle B, and projects upward, and has ahead or button, E, on its upper end. A hand, G, projects from the spindle D to thecirele l3, and within the box a tooth, IT, projects from the spindle and engages with a ratchet-wheel, J, of twenty teeth, in the box, and mounted on a short arbor, K, carrying on its upper end a hand, L, which revolves over the circle 0. A spring, I, rests against the spindle D, to prevent it from turning too freely. A sleeve, M, surrounds the spindle D, and to the lower end of the same a hand, N, is secured, which is slightly longer than the hand G, and also extends to the circle B. A ratchetring, O, is formed on the top of the button or heat It on the sleeve M, and engages with a ratchet-disk, P, on the spindle D, to operate the spindle by means of the sleeve, when said sleeve is turned in a certain direction.

The operation is as follows: For example, to add 98, 74, and 81, the spindle D is turned in the direction of the arrow (4 until the The upper hand, N,

(No model.)

is at 0, and by means of the button R is turned to 74:. Then the upper arm, N, is moved back to 0 in the inverse direction of the arrow a, and then in the direction of the arrow 0 to 81. \Vhen the upper hand, N, is moved in the direction of the arrow a, the lower hand, G, is always moved with it, but when the upper hand is turned in the inverse direction of the arrow (1/ the lower hand, G, remains fixed. Every time thelower hand, G, and spindle D have made one revolution, counting one hundred, (100,) the tooth II moves the wheel J one tooth, and the hundreds are thus shown by the hand L. After the hands have been moved in the manner above set forth the pointer L will be at 2 on the circle 0, signifying 200, and the hand G will be at 58, signifying 253-that is, 98+ 74+ 81:253. Any sum can be added in the manner set forth.

The machine can be used to multiply in a like manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In an adding-machine, the combination, with the box A, having the graduated circle B, of the spindle D, the sleeve M, the hand G on the spindle, the hand N on the sleeve M. and ratchet device 0 P for operating the spindle from the sleeve, substantially as here in shown and described.

2. In an adding-machine, the combination, with the box A, having the graduated circle B, of the spindle D, the sleeve M surrounding it, the hand G on the spindle, the hand N on the sleeve, a ratchet device, 0 P, for operating the spindle from the sleeve. the tooth H on the spindle D, the cognvheel J, the arbor K, and the hand L on the same, substantially as herein shown and described.

3. In an adding-machine, the combination, with the box A, having the graduated circle ll, of the spindle D, the sleeve M surrounding it, the hand G on the spindle D, th hand N on the sleeve, the head or button E on the spindle, the ratchet-disk Pon the spindle, the head or button R on the sleeve, and the ratchet-ring O on the same, substantially as herein shown and described.

JOHN L. MCOALEB.

\Vitnesses:

J. H. NEWTON, J urns L. Win/rim. 

